Here is the Infrared Advantages:

1.Infrared light transmit signal,High Security,Interference Resistence and Against String Frequency

Infrared (IR) is short-range wave, cannot penetrate walls,which solve the string problems between the classrooms. It can realize that many sets of equipments used in many rooms simultaneously, so  it is safe and has good isolation.

 

2.Emitter can be equiped with any receiver,Operate Conveniently

We can use the same frequency in the different rooms beacause of no string frequency. teachers can use the same microphone in different rooms ,so it is conveniet to manage.

 

3.Using light refraction to achieve 360 ° sensing in 30 m, it there are barrier and turn of the teachers ,the transmitting distance can be 10m.

 

4.Away from the electromagnetic radiation and interference, create a healthy, environmental -protected, health, green campus.

 

Product model:KS368 -A

 

Features:

1. Suitable for the classrooms which had installed the amplifier and speaker before, and now need to upgrade to infrared wireless loudspeaker.

2. The max received area is 200sqm.output power is 100W.

3. Has the functions of two-way audio input, one-way audio output, a group of

out-fitted wire microphones input, adjustable audio output rate.

4.Can be extended to use two or four external receiver in order to enhance reception and expand the use of area (400 square meters can be achieved) or upgrade to a dual-frequency machine which is best for interactive teaching.

5. The price is much faverable than other type in our company.

 Specifications:

Weight:1.6KG

Dimension(L*W*D):  8.27''x7.68''x1.97''(210x195x50mm)

Output Range:500mV

Reception Angle:360 degrees

Power Requirements:220VAC  50Hz

Reception sensitivily:85dB

Signal-to-noise :>80dB

IR Receive Frequency:2MHz (encrypted)

Infrared Wavelength:850nm

Additional function:a group of out-fitted wired mics can be connected

Wire microphone interface:one 6.35 phone jacks

 

 

there are two kinds of mirophone for your reference, handhold MIC and chest-worn MIC with collar-clamp or headwear. You can choice the one u like.